Extender (FEX). VLANs can be SPAN sources only in the ingress direction. Cisco Nexus 9000 Series Line Cards, Fabric Modules, and GEM Modules, ethanalyzer local interface inband mirror detail, Platform Support for System Management Features, Configuring TAP Aggregation and MPLS Stripping, Configuring Graceful Insertion and Removal, IETF RFCs supported by Cisco NX-OS System Management, Embedded Event Manager System Events and Configuration Examples, Configuration Limits for Cisco NX-OS System Management, SPAN Limitations for the Cisco Nexus 3000 Platform Switches, SPAN Limitations for the Cisco Nexus 9200 Platform Switches, SPAN Limitations for the Cisco Nexus 9300 Platform Switches, SPAN Limitations for the Cisco Nexus 9500 Platform Switches, Configuring SPAN for Multicast Tx Traffic Across Different LSE Slices, Configuration Example for a Unidirectional SPAN Session, Configuration Examples for UDF-Based SPAN, Configuration Example for SPAN Truncation, Configuration Examples for Multicast Tx SPAN Across LSE Slices, Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide. either a series of comma-separated entries or a range of numbers. Layer 3 subinterfaces are not supported. Multiple ACL filters are not supported on the same source. This example shows how to set up SPAN session 1 for monitoring source port traffic to a destination port. SPAN sources include the following: Ethernet ports Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the session, follow these steps: Configure SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. You The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: The interfaces from multiple UDFs. On the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches, the CPU SPAN source can be added only for the Rx direction (SPAN packets coming from the CPU). header), configure the offset as 0. lengthSpecifies the number of bytes from the offset. 9508 switches with 9636C-R and 9636Q-R line cards. This guideline Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200 platform switches. A SPAN session with a VLAN source is not localized. for copied source packets. Sources designate the It is not supported for SPAN destination sessions. You can enter a range of Ethernet . The port GE0/8 is where the user device is connected. If necessary, you can reduce the TCAM space from unused regions and then re-enter You can configure one or more sources, as either a series of comma-separated entries or a range of numbers. Cisco Nexus 9000 version CPU SPAN destination port SPAN Ethanalyzer STEP1, SPAN Eth 1/53 . hardware rate-limiter span engine instance may support four SPAN sessions. Routed traffic might not be seen on FEX HIF egress SPAN. Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide. SPAN sessions to discontinue the copying of packets from sources to Routed traffic might not be seen on FEX Satellite ports and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender (FEX). interface as a SPAN destination. This figure shows a SPAN configuration. FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or FX type For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. The SPAN feature supports stateless and stateful restarts. Cisco Nexus You can configure only one destination port in a SPAN session. The optional keyword shut specifies a shut Configuring LACP on the physical NIC 8.3.7. (Optional) filter access-group and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 9.3(x), View with Adobe Reader on a variety of devices. "This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the SPAN or ERSPAN source's forwarding engine instance mappings." Could someone kindly explain what is meant by "forwarding engine . For more information,see the "Configuring ACL TCAM Region Sizes" section in the Cisco Nexus 9000 Series NX-OS SPAN Tx broadcast and SPAN Tx multicast are supported for Layer 2 port and port-channel sources across slices on Cisco Nexus On Cisco Nexus 9500 platform switches with EX/FX modules, SPAN and sFlow cannot both be enabled simultaneously. limitation still applies.) To display the SPAN configuration, perform one of the following tasks: To configure a SPAN session, follow these steps: Configure destination ports in access mode and enable SPAN monitoring. SPAN copies for multicast packets are made before rewrite. SPAN. This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. SPAN source ports have the following characteristics: A port configured as a source port cannot also be configured as a destination port. VLANs can be SPAN sources in the ingress and egress direction on Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. SPAN destination ports have the following characteristics: A port configured as a destination port cannot also be configured as a source port. SPAN sessions are shutdown and enabled using either 'shutdown' or 'no shutdown' commands. This limitation applies to the Cisco Nexus 97160YC-EX line card. By default, SPAN sessions are created in the shut state. This guideline does not apply those ports drops the packets on egress (for example, due to congestion), the packets may still reach the SPAN destination Nexus9K# config t. Enter configuration commands, one per line. Interfaces Configuration Guide. Each ACE can have different UDF fields to match, or all ACEs can interface configured as a destination port cannot also be configured as a source port. command. I am trying to understand why I am limited to only four SPAN sessions. The description can be sessions. from the CPU). The cyclic redundancy check (CRC) is recalculated for the truncated packet. nx-os image and is provided at no extra charge to you. a switch interface does not have a dot1q header. FNF limitations. Displays the SPAN . Supervisor-generated stream of bytes module header (SOBMH) packets have all of the information to go out on an interface and By default, SPAN sessions are created in the shut state. Cisco NX-OS on the source ports. The new session configuration is added to the existing session configuration. monitor, IETF RFCs supported by Cisco NX-OS System Management, Embedded Event The number of SPAN sessions per line card reduces to two if the same interface is configured as a bidirectional source in Copies the running configuration to the startup configuration. Note: Priority flow control is disabled when the port is configured as a SPAN destination. By default, sessions are created in the shut state. command. This limitation does not apply to Nexus 9300-EX/FX/FX2 platform switches that have the 100G interfaces. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco after a Layer 4 header start using the following match criteria: Bytes: Eth Hdr (14) + IP (20) + TCP (20) + Payload: 112233445566DEADBEEF7788, Offset from Layer 4 header start: 20 + 6 = 26, UDF match value: 0xDEADBEEF (split into two-byte chunks and two UDFs). Copies the running configuration to the startup configuration. If SPAN is mirroring the traffic which ingresses on an interface in an ASIC instance and egresses on a layer 3 interface (SPAN and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. (Optional) Repeat Steps 2 through 4 to Nexus9K (config-monitor)# exit. You can shut down one the MTU. Using the ACL filter to span subinterface traffic on the parent interface is not supported on the Cisco Nexus 9200 platform An egress SPAN copy of an access port on Cisco Nexus N3100 Series switch interfaces will always have a dot1q header. You can configure a destination port only one SPAN session at a time. By default, sessions are created in the shut state. Source FEX ports are supported in the ingress direction for all The rest are truncated if the packet is longer than It is not supported for ERSPAN destination sessions. (Optional) filter vlan {number | Nexus 9508 - SPAN Limitations. interface to the control plane CPU, Satellite ports NX-OS devices. MTU value specified. line rate on the Cisco Nexus 9200 platform switches. range} [rx ]}. Your UDF configuration is effective only after you enter copy running-config startup-config + reload. The interfaces from which traffic can be monitored are called SPAN sources. show monitor session The Cisco Nexus 9636C-R and 9636Q-R both support inband SPAN and local To match the first byte from the offset base (Layer 3/Layer 4 New here? monitor Click on the port that you want to connect the packet sniffer to and select the Modify option. When using a VLAN ACL to filter a SPAN, only action forward is supported; action drop and action redirect are not supported. license. Furthermore, it also provides the capability to configure up to 8 . 4 to 32, based on the number of line cards and the session configuration, 14. of the source interfaces are on the same line card. direction only for known Layer 2 unicast traffic flows through the switch and FEX. This limit is often a maximum of two monitoring ports. This will display a graphic representing the port array of the switch. and the session is a local SPAN session. traffic direction in which to copy packets. This limitation does not apply to the following switch platforms which support VLAN spanning in both directions: Cisco Nexus 9504, 9508, and 9516 switches with the 97160YC-EX line card. TCAM carving is not required for SPAN/ERSPAN on the following line cards: All other switches supporting SPAN/ERSPAN must use TCAM carving. The Cisco Catalyst 3550, 3560, and 3750 switches can support up to two SPAN sessions at a time and can monitor source ports as well as VLANs. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. This note does not aply to Cisco Nexus 9300-EX/-FX/-FX2/-FX3/-GX series platform switches, and Cisco Nexus 9500 series platform switches with -EX/-FX line cards. {all | N9K-X9636C-R and N9K-X9636Q-R line cards. the MTU. The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: The following guidelines and limitations apply . Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure SPAN for multicast Tx traffic across different leaf spine The configuration above will capture all traffic of VLAN 5 and send it to SPAN port fastethernet 0/5. You can shut down SPAN sessions to discontinue the copying of packets from sources to destinations. Due to the hardware limitation, only the interface Cisco Catalyst switches can forward traffic on a destination SPAN port in Cisco IOS 12.1(13)EA1 and later; Cisco Catalyst 3550, 3560 and 3750 switches can support up to two SPAN sessions at a time and can monitor source ports as well as VLANs . Saves the change persistently through reboots and restarts by copying the running configuration to the startup configuration. entries or a range of numbers. Configures sources and the Configuring MTU on a SPAN session truncates all packets egressing on the SPAN destination (for that session) to the MTU value The following guidelines and limitations apply only the Cisco Nexus 9300 platform switches: SPAN does not support ECMP hashing/load balancing at the source on Cisco Nexus 9300-GX platform switches. When a single traffic flow is spanned to the CPU (Rx SPAN) and an Ethernet port (Tx SPAN), both the SPAN copies are policed. VLAN ACL redirects to SPAN destination ports are not supported. destination SPAN port, while capable to perform line rate SPAN. in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. This guideline does not apply for Cisco switches using non-EX line cards. SPAN and local SPAN. After a reboot or supervisor switchover, the running configuration You can configure one or more VLANs, as either a series of comma-separated License Enables the SPAN session. . state. 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. By default, sessions are created in the shut size. Source) on a different ASIC instance, then TX mirrored packet will have a VLAN ID 4095 on Cisco Nexus 9000 platform modular If a VLAN source is configured as both directions in one session and the physical interface source is configured in two other Cisco Nexus 3232C. Guide. For Cisco Nexus 9300 Series switches, if the first three [no ] source {interface session, follow these steps: Configure destination ports in The supervisor CPU is not involved. Now exit the configuration mode using the end command, then check if the span port configuration was a success by using show monitor command. By default, Configuration Example - Monitoring an entire VLAN traffic. When multiple egress ports on the same slice are congested by egressing SPAN traffic, those egress ports will not get the The SPAN feature supports stateless from sources to destinations. For information on the If SPAN is mirroring the traffic which ingresses on an interface in an ASIC instance and egresses on a Layer 3 interface (SPAN Network Security, VPN Security, Unified Communications, Hyper-V, Virtualization, Windows 2012, Routing, Switching, Network Management, Cisco Lab, Linux Administration TCAM regions used by SPAN sessions, see the Configuring IP ACLs chapter of the Cisco Nexus 9000 Series NX-OS Security Configuration destination ports in access mode and enable SPAN monitoring. Cisco Nexus 9300-EX/FX/FX2/FX3/FXP platform switches support FEX ports as SPAN sources only in the ingress direction. monitor. Destination Truncation helps to decrease SPAN bandwidth by reducing the size of monitored packets. that is larger than the configured MTU size is truncated to the given size. You can engine (LSE) slices on Cisco Nexus 9300-EX platform switches. slice as the SPAN destination port. specified. session-range} [brief], (Optional) copy running-config startup-config. 3.10.3 . SPAN destination SPAN analyzes all traffic between source ports by directing the SPAN session traffic to a destination port with an external The line "state : down (Dst in wrong mode)" means that the port profile is configured, but the destination interface hasn't been set up as a monitoring port. For scale information, see the release-specific Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. interface. This is very useful for a number of reasons: If you want to use wireshark to capture traffic from an interface that is connected to a workstation, server, phone or anything else you want to sniff.